Higher Environmental Standards
High environmental standards have shaped the choice of materials in the new commuter trains. 95% of a car can be recycled when they are ready to be scrapped.
When the trains brake, the 3-phase motors act as generators and return electricity to the system rather than converting power to heat, as on a friction brake system. The current that is produced is conducted back to the overhead lines. If there is another train in the same electrical section, this train will use as much of the generated energy as it can.
The trains are designed and built for Swedish weather conditions; This is done by utilizing the roof space for the traction /air supply and auxiliary power converters, rather than placing them underneath the unit. This means they suffer less from snow and ice accumulation, and it should be possible to operate them without service disruptions both in heavy snow and in hot summers (X1 and X10 had problems with the heavy snowfall and froze, disabling them seriously). The technical systems in the train are "doubled," i.e. redundancy is provided, using microprocessor control systems, which greatly reduces the risk of service disruptions.
Read more about this topic: SL X60
Famous quotes containing the words higher and/or standards:
“The world stands out on either side
No wider than the heart is wide;
Above the world is stretched the sky,—
No higher than the soul is high.”
—Edna St. Vincent Millay (1892–1950)
“Today so much rebellion is aimless and demoralizing precisely because children have no values to challenge. Teenage rebellion is a testing process in which young people try out various values in order to make them their own. But during those years of trial, error, embarrassment, a child needs family standards to fall back on, reliable habits of thought and feeling that provide security and protection.”
—Neil Kurshan (20th century)